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Finding the Fourth Proportional to 67,020.42, 100,029.14 and 65,913.29

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Solution

The fourth proportional to 67,020.42, 100,029.14 and 65,913.29 is: 98,376.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,020.42 : 100,029.14 = 65,913.29 : x
  2. Step 2: Convert to fraction form
    67,020.42/100,029.14 = 65,913.29/x
  3. Step 3: Cross multiply
    67,020.42x = 100,029.14 × 65,913.29
  4. Step 4: Simplify right side
    67,020.42x = 6,593,248,883.56
  5. Step 5: Solve for x
    x = 6,593,248,883.56/67,020.42
  6. Step 6: Final answer
    x = 98,376.72

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.